Thermal Conductivity of Gypsum at High Temperatures – A Combined Experimental and Numerical Approach

I. Rahmanian, Y. Wang


Performance of gypsum board based systems in fire is highly influenced by the temperature-dependant thermal conductivity of gypsum boards, yet there is a wide difference in the thermal conductivity values used in literature. Presented here is a hybrid method to determine the effective thermal conductivity of gypsum boards at high temperatures, based on using small-scale experimental results and a thermal conductivity model which includes the effects of radiation in voids. 


gypsum board; thermal conductivity; high temperatures; radiation in voids; porous material; passive fire protection; fire resistance

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ISSN 1210-2709 (Print)
ISSN 1805-2363 (Online)
Published by the Czech Technical University in Prague